Test for new runner

Author: luc-github

.github/workflows/release.yml

@@ -152,8 +152,7 @@ jobs:
 
   macos-intel:
     needs: version
-    runs-on: macos-13
-    if: false  # macos-13 runner queue too slow — build manually and attach to release
+    runs-on: macos-15-intel
     continue-on-error: true
     steps:
       - uses: actions/checkout@v4.2.2

docs/operations/PACKAGING.md

@@ -193,6 +193,8 @@ Homebrew requires Xcode Command Line Tools; the installer will prompt to install
 - `pip install "PySide6>=6.5,<6.6" -r requirements.txt pyinstaller`
   PySide6 6.5.x is the last series supporting macOS 11. PySide6 6.6+ requires macOS 12+.
 
+CI uses `macos-15-intel` runner (Intel x86_64, macOS 15) — faster queue than the deprecated `macos-13`.
+
 ### Build
 
 ```bash